20006380

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{73}}^1\times {\mathrm{193}}^1$

素因数の和:346

約数の個数: 48

約数和(自身を含む): 43412544

約数和(自身を除く): 23406164

約数列:

[1, 2, 4, 5, 10, 20, 71, 73, 142, 146, 193, 284, 292, 355, 365, 386, 710, 730, 772, 965, 1420, 1460, 1930, 3860, 5183, 10366, 13703, 14089, 20732, 25915, 27406, 28178, 51830, 54812, 56356, 68515, 70445, 103660, 137030, 140890, 274060, 281780, 1000319, 2000638, 4001276, 5001595, 10003190, 20006380]

約数ペア:

[(1, 20006380), (2, 10003190), (4, 5001595), (5, 4001276), (10, 2000638), (20, 1000319), (71, 281780), (73, 274060), (142, 140890), (146, 137030), (193, 103660), (284, 70445), (292, 68515), (355, 56356), (365, 54812), (386, 51830), (710, 28178), (730, 27406), (772, 25915), (965, 20732), (1420, 14089), (1460, 13703), (1930, 10366), (3860, 5183)]